1999-11-18 Roland McGrath <roland@baalperazim.frob.com>

	* Makefile, main.c: New files for new this directory `mach-defpager'.
	This is a standalone Hurd program version of the Mach default pager,
	with the bulk of the source code coming from ../serverboot.
	This program /hurd/mach-defpager is started like a normal daemon,
	i.e. from rc or whatever, rather than being the first task.
	* ChangeLog: New file, mentioning itself in this sentence.

1 files changed, 148 insertions, 0 deletions

diff --git a/mach-defpager/main.c b/mach-defpager/main.c
new file mode 100644
index 00000000..203aad21
--- /dev/null
+++ b/mach-defpager/main.c
@@ -0,0 +1,148 @@
+/* Main program for standalone Hurd version of Mach default pager.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+
+#include <mach.h>
+#include <hurd.h>
+#include <cthreads.h>
+#include <device/device.h>
+#include <device/device_types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <error.h>
+
+/* XXX */
+#include <fcntl.h>
+#include <paths.h>
+#include <errno.h>
+#include <unistd.h>
+#include <hurd.h>
+#include <hurd/port.h>
+#include <hurd/fd.h>
+/* XXX */
+
+
+extern
+vm_size_t	cthread_wait_stack_size;
+
+mach_port_t	bootstrap_master_device_port;	/* local name */
+mach_port_t	bootstrap_master_host_port;	/* local name */
+
+extern void	default_pager();
+extern void	default_pager_initialize();
+extern void	default_pager_setup();
+
+/* initialized in default_pager_initialize */
+extern mach_port_t default_pager_exception_port;
+extern mach_port_t default_pager_bootstrap_port;
+
+
+static void
+printf_init (device_t master)
+{
+  mach_port_t cons;
+  kern_return_t rc;
+  rc = device_open (master, D_READ|D_WRITE, "console", &cons);
+  if (rc)
+    error (2, rc, "cannot open kernel console device");
+  stdin = mach_open_devstream (cons, "r");
+  stdout = stderr = mach_open_devstream (cons, "w");
+  mach_port_deallocate (mach_task_self (), cons);
+  setbuf (stdout, 0);
+}
+
+
+int debug;
+
+int
+main (int argc, char **argv)
+{
+  const task_t my_task = mach_task_self();
+  error_t err;
+  memory_object_t defpager;
+
+  /*
+   * Use 4Kbyte cthread wait stacks.
+   */
+  cthread_wait_stack_size = 4 * 1024;
+
+  err = get_privileged_ports (&bootstrap_master_host_port,
+			      &bootstrap_master_device_port);
+  if (err)
+    error (1, err, "cannot get privileged ports");
+
+  defpager = MACH_PORT_NULL;
+  err = vm_set_default_memory_manager (bootstrap_master_host_port, &defpager);
+  if (err)
+    error (1, err, "cannot check current default memory manager");
+  if (MACH_PORT_VALID (defpager))
+    error (2, 0, "Another default memory manager is already running");
+
+  if (!(argc == 2 && !strcmp (argv[1], "-d")) && daemon (0, 0) < 0)
+    error (1, errno, "cannot become daemon");
+
+  printf_init(bootstrap_master_device_port);
+
+  /*
+   * Set up the default pager.
+   */
+  partition_init();
+
+  /*
+   * task_set_exception_port and task_set_bootstrap_port
+   * both require a send right.
+   */
+  (void) mach_port_insert_right(my_task, default_pager_bootstrap_port,
+				default_pager_bootstrap_port,
+				MACH_MSG_TYPE_MAKE_SEND);
+  (void) mach_port_insert_right(my_task, default_pager_exception_port,
+				default_pager_exception_port,
+				MACH_MSG_TYPE_MAKE_SEND);
+
+  /*
+   * Change our exception port.
+   */
+  if (!debug)
+  (void) task_set_exception_port(my_task, default_pager_exception_port);
+
+  default_pager_initialize (bootstrap_master_host_port);
+
+  /*
+   * Become the default pager
+   */
+  default_pager();
+  /*NOTREACHED*/
+  return -1;
+}
+
+
+void
+panic (const char *fmt, ...)
+{
+  va_list ap;
+  fprintf (stderr, "%s: panic: ", program_invocation_name);
+  va_start (ap, fmt);
+  vfprintf (stderr, fmt, ap);
+  va_end (ap);
+  exit (3);
+}